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請用此 Handle URI 來引用此文件: http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/77765
完整後設資料紀錄
DC 欄位值語言
dc.contributor.advisor張麗冠(Li-Kwan Chang)
dc.contributor.authorYou-Chia Chenen
dc.contributor.author陳宥嘉zh_TW
dc.date.accessioned2021-07-11T14:34:25Z-
dc.date.available2023-07-30
dc.date.copyright2018-07-30
dc.date.issued2018
dc.date.submitted2018-07-25
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dc.identifier.urihttp://tdr.lib.ntu.edu.tw/jspui/handle/123456789/77765-
dc.description.abstractA型流感病毒(IAV)是造成季節性流感與全球大流行的病原體。由於其具有基因突變率高、傳播速度快、跨物種感染的特性,IAV對於人類的健康造成很大的威脅。因此,目前對於新型抗流感策略的發展有急迫的需求。然而,過去研究流感病毒生活史的實驗方法有它的局限性,不能即時追蹤病毒的基因體RNA(viral RNA, vRNA)在活細胞內與宿主蛋白質交互作用的詳細過程。所以,本研究建立一個以螢光蛋白質為基礎的活細胞影像系統,以偵測流感病毒vRNA在單一細胞層次的即時動態。我們利用MS2噬菌體的殼體蛋白質(MS2 coat protein, MCP)與基因體RNA上的MCP結合位高度專一結合的特性,將24個會形成特殊二級結構的序列(24xMSL)插入至A型流感病毒PB2 vRNA,取代部分PB2基因的編碼序列(coding sequence),形成PB2-24xMSL vRNA。實驗結果顯示,這種攜帶PB2-24xMSL vRNA的流感病毒可以在持續表現PB2蛋白質的MDCK細胞中增殖。另外,為了瞭解不同vRNA是否會在細胞核內相同的區域複製,我們也將18個來自大腸桿菌且會形成特殊二級結構的序列(18xBSL)插入至流感病毒HA vRNA,創造HA-18xBSL vRNA。分析結果顯示PB2和HA在細胞核內不同的位置複製。本研究建立的系統可以突破傳統研究方法的限制,探討流感病毒在宿主細胞內的生理活動。此研究系統可能有助於新型抗流感策略的發展。zh_TW
dc.description.abstractInfluenza A virus (IAV) is the pathogen causing recurrent influenza epidemics and severe pandemics. IAV has wide disseminations across species and has resulted in many fatal human infections. Therefore, there is an urgent need to develop new anti-influenza strategies to prevent influenza’s spreading. However, there are perceived challenges and limitations in understanding the life cycle of influenza due to the lacks of adequate approaches to investigate the dynamic and kinetic interactions of the virus with its host cells in real time in live cells. In this study, we established a fluorescent protein-based live-cell imaging system to visualize influenza RNA genomes at single-cell level. Accordingly, 24 copies of the stem-loop structures for the binding of bacteriophage MS2 coat protein was inserted into the influenza viral PB2 segment in a reverse genetic system to substitute their coding sequences. Our results have shown that the engineered influenza A virus is likely to be propagated in cells complemented with PB2. This study also engineered influenza virus’ HA vRNA to encode 18 copies of Bgl stem-loops for determining whether IAV’s segments are recruited to specific locations of the nucleus for efficient replication. However, we found that influenza segments replicate independently at their own subnuclear domains rather than replicate together as bundled units. Our reserch aims to investigate the most fundamental aspects of influenza A virus physiology that are difficult to study by using conventional methods. This study will lead to the development of new anti-influenza strategies to prevent its infection.en
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Previous issue date: 2018
en
dc.description.tableofcontents誌謝 I
摘要 II
Abstract III
Contents V
Figure contents VII
Introduction 1
Materials and methods 8
CELLS 8
PLASMID 8
PREPARATION OF INFLUENZA VIRUS BY USING THE REVERSE GENETIC SYSTEM 10
PREPARATION OF RETROVIRUSES 10
TRANSDUCTION 11
INFECTION 11
FLUORESCENCE MICROSCOPY 12
QUANTIFICATION ANALYSIS 12
TIME-LAPSE EXPERIMENTS 12
MEASURING THE INTENSITY OF FLUORESCENCE SPOTS IN THE NUCLEUS 13
WESTERN BLOTTING 14
Results 15
MS2 COAT PROTEIN RECOGNIZES THE SECONDARY STRUCTURE OF MS2 STEM-LOOP SPECIFICALLY 15
ESTABLISHMENT OF A VISUALIZING SYSTEM FOR TRACKING INFLUENZA VRNA 16
IDENTIFYING THE PROTEIN COMPONENTS WITHIN VRNP REQUIRED FOR THE SYNTHESIS OF INFLUENZA VRNA 19
VISUALIZING PB2-24XMSL VRNA IN LIVE CELLS 20
INFLUENZA VIRAL RNA SEGMENTS ACCUMULATE BUT DO NOT COLOCALIZE AT THE PARTICULAR SITES IN THE NUCLEUS FOR THEIR REPLICATION 21
ESTABLISHMENT OF MDCK CELLS CONSTITUTIVELY EXPRESSING PB2 CONSTITUTIVELY 22
GENERATION OF THE DERIVATIVE IAV HARBORING PB2-24XMSL VRNA 23
Discussion 25
Figures 30
References 47
dc.language.isoen
dc.subject活細胞影像zh_TW
dc.subject流感病毒zh_TW
dc.subjectlive cell imagingen
dc.subjectinfluenza A virusen
dc.title追蹤A型流感病毒在活細胞內的複製動態zh_TW
dc.titleVisualizing the replication dynamics of influenza A virus in live cellsen
dc.typeThesis
dc.date.schoolyear106-2
dc.description.degree碩士
dc.contributor.oralexamcommittee邱亞芳(Ya-Fang Chiu),施信如(Shin-Ru Shih),張世宗(Shih-Chung Chang),劉旻禕(Min-Yi Liu)
dc.subject.keyword流感病毒,活細胞影像,zh_TW
dc.subject.keywordinfluenza A virus,live cell imaging,en
dc.relation.page57
dc.identifier.doi10.6342/NTU201801884
dc.rights.note有償授權
dc.date.accepted2018-07-26
dc.contributor.author-college生命科學院zh_TW
dc.contributor.author-dept生化科技學系zh_TW
dc.date.embargo-lift2023-07-30-
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